Automatic document conveying apparatus

U.S. Patent Number: 5385341

Abstract: An automatic document conveying device has a stack tray on which a plurality of documents are stacked; a feeder by which the documents stacked on the stack tray are separated and fed one by one; at least one pair of conveying rollers provided downstream of the feeder; a reading position for reading document information from said separated documents positioned downstream of the at least one pair of conveying rollers; a conveyor provided opposite to the reader for conveying separated documents to the reading position; a discharger positioned downstream of said reading position for discharging documents after said conveyor conveys the documents to the reading position, a conveyance path on which a plurality of documents are sequentially located between the feeder and the reading position; the conveyance path having predetermined stand-by positions provided on the conveyance path at which documents, subsequent to a document positioned at the reading position are stopped; a document detector provided between the at least one pair of conveying rollers and the conveyor; an encoder which generates a pulse signal corresponding to a rotation of the conveyor; and pulse counter for counting the encoding pulses. A document conveyance to the reading position by the conveyor is controlled based on a number of pulses counted by the pulse counters on the basis of a detection timing by the document detector.

Inventors: Yamada; Yasushi (Hachioji, JP), Hirata; Tetsuo (Hachioji, JP), Uematsu; Tadashi (Oizumi, JP), Hara; Hiroyuki (Kamifukuoka, JP)

Assignee: Konica Corporation (Tokyo, JP)

Application Number: 08/083,026

Issued: 1995-01-31

Expired: 2007-01-31

Classes: 271/4.01 ; 271/265.02; 271/266; 271/275; 399/367

Field of search: 271/265,266,275 355/308

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